"The Working Group concluded that the requests did not meet the threshold of a review as enshrined in paragraph 21 of its methods of work, and that they were thus not admissible," the Office of the United Nations High Commissioner for Human Rights (OHCHR) said in a statement on Wednesday.
A UN Working Group on Arbitrary Detention (WGAD) ruled in February that Assange was "arbitrarily detained" in London and should be released. The United Kingdom and Sweden defied this decision. London has reiterated that Assange would be arrested in case he left the embassy.
Assange said in response to the UN statement that since the all appeals were "exhausted," he expected the United Kingdom and Sweden to comply with international obligations and released him, according to WikiLeaks website.
Assange has been residing at the Ecuadorian Embassy in London since 2012 for fear of being extradited to Sweden where he has been accused of rape.
He denies the allegations, claiming they are a ruse organized by Washington to hand him over to the United States where he is wanted for leaking thousands of top-secret military documents.
